Embedded Profile Match

When I open photos (taken using digital camera) in Adobe Photoshop CS3 I receive the following
Why does this happen & what do I do to over come receiving this message each time. I’m running Vista 64bits using HP Photosmart C2700 all in one printer

Embedded Profile Match

What would you like to do?
Use the embedded profile (instated of the working space)
Convert document’s colour to working space
Discard the embedded profile (don’t colour manage